我有一个包含4个JPanels和1个JScrollPane的框架,这4个面板的边界布局是北,东,南,西和中心的滚动窗格。
我一直在尝试获取框架功能的pack方法,但是当你运行时,你只需要获得窗口的标题栏。
任何想法?
JFrame conFrame;
JPanel panel1;
JPanel panel2;
JPanel panel3;
JPanel panel4;
JScrollPane listPane;
JList list;
Object namesAr[];
...
...
...
namesAr= namesA.toArray();
list = new JList(namesAr);
list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
list.setVisibleRowCount(-3);
list.addListSelectionListener(this);
listPane = new JScrollPane(list);
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
conFrame.setLayout(new BorderLayout());
panel1.setPreferredSize(new Dimension(100, 100));
panel2.setPreferredSize(new Dimension(100, 100));
panel3.setPreferredSize(new Dimension(100, 100));
panel4.setPreferredSize(new Dimension(100, 100));
panel1.setBackground(Color.red);
panel2.setBackground(Color.red);
panel3.setBackground(Color.red);
panel4.setBackground(Color.red);
conFrame.pack();
conFrame.add(panel1, BorderLayout.NORTH);
conFrame.add(panel2, BorderLayout.EAST);
conFrame.add(panel3, BorderLayout.SOUTH);
conFrame.add(panel4, BorderLayout.WEST);
conFrame.add(listPane, BorderLayout.CENTER);
conFrame.setVisible(true);
答案 0 :(得分:2)
您需要在执行pack()之前将面板添加到框架中,否则无需打包。
此外,框架的默认布局是BorderLayout。